Begin forwarded message: From: Don Berry <berry@sas.upenn.edu> Date: November 12, 2003 3:30:29 PM EST Subject: Virtual memory weirdness? I've been evaluating a dual processor G5, working it pretty hard for several weeks (2 x ~100% CPU jobs running all the time.) I just noticed the following virtual memory statistics: dberry% vm_stat Mach Virtual Memory Statistics: (page size of 4096 bytes) Pages free: 4799. Pages active: 140469. Pages inactive: 90789. Pages wired down: 26087. "Translation faults": -1283718751. Pages copy-on-write: 599196. Pages zero filled: -1293420378. Pages reactivated: 1004467. Pageins: 29024. Pageouts: 2675. Object cache: 325107 hits of 618313 lookups (52% hit rate) dberry% I usually only focus on the Pageouts, where are not a problem here, but notice the large negative numbers! I saw the same thing happen about 3 weeks ago, and shortly thereafter the machine began to act flaky. Rebooting removed all flakiness, but I certainly can't attribute the problem to the negative values appearing in vm_stat. It could just be the values exceeded the range expected by the vm_stat code itself and they roll over negative, but if the system itself is generating impossible numbers, it could be a sign of a deeper problem. Any thoughts? Don Berry Donald H. Berry, Professor and Undergraduate Chair Department of Chemistry University of Pennsylvania Philadelphia, PA 19104-6323 ------------------------------------------------------------------------ Alex Reynolds V: +1 215 573.2818 Senior IT Specialist F: +1 215 898.8780 15 Mudd Building / 6013 E: mailto:reynolda@sas.upenn.edu Department of Biology W: http://www.bio.upenn.edu/computing/ University of Pennsylvania Philadelphia, PA 19104 _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.